1978- shower valve came out in my hand?
i'm a new airstream owner and reworking a 78 -31' airstream. this trailer has been sitting in the hot florida sun for about 12 years. the first time i applied city water -- nothing happened??? then i tried the kitchen sink and found the single lever faucet frozen! then i moved to the shower faucet and tried turning the handle only to have the entire shaft blow out in my hand from the city pressure!!! i managed to push it back down long enough for my wife to shut the city water off. now the question-- does this mean i'm going to have to replace the entire valve? the assembly that came out has the valve washers at different locations on it's shaft. is this supposed to come out if turned??? for valve washer replacement??? i plan on replacing the vanity and kitchen faucet, but i dread the thought of removing the tube to get to the shower deverter valve for replacement... thanks, tuna